Norman's seven-stage model of action is a highly influential account of the way humans rapidly plan and execute actions, popularised in his 1988 book 'The psychology of everyday things' (later renamed to 'The design of everyday things').
The model starts with four stages of execution:
The action has some sort of effect on the system (physical world or digital system). This is then followed by three stages of evaluation:
This then updates the human's own model of the system and future plan of action, especially if the state is not as expected.
- user establishes the goal
- formulates intention
- specifies actions at interface
- executes action
The action has some sort of effect on the system (physical world or digital system). This is then followed by three stages of evaluation:
- perceives system state
- interprets system state
- evaluates system state with respect to goal
This then updates the human's own model of the system and future plan of action, especially if the state is not as expected.